About
Vision
Once all technical knowledge in the world is structured as dependency graphs, every problem starts from everything already known: you, or your AI, see which building blocks it needs, what each one depends on, and which proven work to combine, instead of starting from zero.
A hub of knowledge dependency graphs for every domain where knowledge depends on other knowledge: each idea linked to what it builds on and what builds on it, so problems get solved more efficiently.
- Algorithms and systems
- Mathematics
- Physics
- Materials science
- Medicine
About me

Raphael Nitsche LinkedIn
Timeline
- 2013–2017 Co-founder, Math 42, with my family (computer algebra system, step-by-step math solutions for students)
- 2017–2019 Math 42 acquired by Chegg Inc. (Santa Clara, education)
- 2022–2024 Theoretical mathematics studies, focus on machine learning
- 2024–now Lotus Chess, with my brother (chess learning app, 500k+ users)
- 2026–now tirogla (dependency graphs of all technical knowledge, starting with algorithms and systems)
tirogla is a project of Lotus Chess UG (haftungsbeschränkt), Berlin.